use to enter san francisco bay. the goal is to reduce collisions between large vessels and whales. kron 4's charles clifford has details. >> reporter: migrating whales, such humpbacks, often pass through the waters off california's coast. far to often, these large creatures collide with cargo ships, killing or severely injuring the whales. but under a plan developed by the national oceanic and atmospheric administration, and now approved by the international maritime organization, cargo ships will be required to travel through narrower shipping lanes in an effort to avoid these deadly collisions. the changes involve shipping lanes at the port of los angeles and long beach, as well as the approach to san francisco bay. this is a google earth view of san franciso looking north across the city. currently any cargo ship that enters or exits san francisco bay has to use one of three shipping lanes, seen here in red. but under the newly approved plan, these lanes will be reconfigured. the new routes will be longer and narrower. the idea is to restrict ships to a smaller area when they p
